President Trump meant business when he revealed his highly criticized pledge to build a wall between the United States and Mexico, and believes construction will start ‘in months.’

He spoke in his first interview since being inaugurated, with ABC Nightly News anchor David Muir.

ABC News broke into lunch-hour programming – Washington, D.C. viewers missed a few minutes of ‘Who Wants to be a Millionaire?’ – in order to broadcast a brief teaser from Wednesday’s Oval Office interview.

Construction will begin ‘as soon as we can, as soon as we can physically do it,’ Trump said.

Asked if it would be just a matter of months, the president agreed.’I would say in months, yeah. I would say in months. Certainly planning is starting immediately.’ he said.